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Abstract: Context. Due to its great mass and its rapid formation, Jupiter has played acrucial role in shaping the Solar System. The knowledge of its internalstructure would strongly constrain the solar system formation mechanism.Seismology is the most efficient way to probe directly the internal structureof giant planets. Aims. SYMPA is the first instrument dedicated to theobservations of free oscillations of Jupiter. Principles and theoreticalperformance have been presented in paper I. This second paper describes thedata processing method, the real instrumental performance and presents thefirst results of a Jovian observation run, lead in 2005 at Teide Observatory.Methods. SYMPA is a Fourier transform spectrometer which works at fixed opticalpath difference. It produces Doppler shift maps of the observed object.Velocity amplitude of Jupiter-s oscillations is expected below 60 cm-s. ResultsDespite light technical defects, the instrument demonstrated to work correctly,being limited only by photon noise, after a careful analysis. A noise level ofabout 12 cm-s has been reached on a 10-night observation run, with 21 % dutycycle, which is 5 time better than previous similar observations. However, nosignal from Jupiter is clearly highlighted.



Author: Patrick Gaulme, F.X. Schmider, Jean Gay, Cedric Jacob, Manuel Alvarez, Mauricio Reyes, Juan Antonio Belmonte, Eric Fossat, Franco

Source: https://arxiv.org/



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